Pesticide Dilution
Measure concentrate and water to mix a spray tank.
About Pesticide Dilution
The amount of concentrate in a tank is proportional to the ratio of the desired spray strength to the concentrate strength. A wrong concentrate-to-water ratio either does nothing or damages plants, so scale from the label percentage rather than guessing.
Formula
Pesticide Dilution
Concentrate = tank x target% ÷ concentrate%; rest is water
- spray strength
- The finished active-ingredient percentage
Worked example
With the default values below, Pesticide Dilution returns Concentrate Needed of 6.40. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Tank volumeminimum 0 gal
- 2 gal
- Concentrate strengthaccepts 0–100 %
- 40 %
- Desired spray strengthaccepts 0–100 %
- 1 %
Results
- Concentrate Needed
- 6.40 oz
- Water to Add
- 249.60 oz
- Water in Gallons
- 1.95 gal
Step by step
- 1Values used
- 2Pesticide Dilution
- 3Concentrate Needed= 6.40 oz
- 4Water to Add= 249.60 oz
- 5Water in Gallons= 1.95 gal
Assumptions and limits
- The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Pesticide Dilution calculated?
Concentrate = tank x target% ÷ concentrate%; rest is water The amount of concentrate in a tank is proportional to the ratio of the desired spray strength to the concentrate strength.
Why does Pesticide Dilution matter?
A wrong concentrate-to-water ratio either does nothing or damages plants, so scale from the label percentage rather than guessing.
What values do I need to enter?
This calculator takes 3 inputs: Tank volume, Concentrate strength, Desired spray strength. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.